Computed Tomography in Congenital Hip Dislocation

Browning, W. H.; Rosenkrant, H.; Tarquinio, Thom A.

doi:10.1097/00004728-198210000-00058

Cited by 2 publications

(2 citation statements)

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“…These results are in agreement with several prior studies. 2,6,28 The positive correlation between age and acetabular anteversion measured by 3D-CT in affected hips was unexpected, however, and has not previously been reported in the literature.…”

Section: Discussionmentioning

confidence: 72%

“…25,26 The most important technique for diagnosing anatomic deformity in DDH is CT scanning. Several 2D-CT studies of DDH in children have implicated excessive anteversion of the acetabulum as one component of the anatomical abnormality, 2,3,5 while others have failed to confirm that acetabular anteversion is consistently increased in DDH. 7 -10 The variation in findings using two-dimensional imaging to evaluate the three-dimensional acetabular anteversion in DDH is likely explained by different levels of measurement within the acetabulum and the fact that a 2D-CT slice may miss the area of deficiency in the acetabulum.…”

Section: Discussionmentioning

confidence: 99%

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Measurement of Acetabular Anteversion in Developmental Dysplasia of the Hip in Children by Two- and Three-dimensional Computed Tomography

Zhao

et al. 2009

J Int Med Res

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This study assessed the angle of acetabular anteversion (AA) in 66 children with developmental dysplasia of the hip (132 hips: 24 left, 25 right, 17 bilateral and 49 unaffected hips as controls). The AA was measured by two- and three-dimensional computed tomography (2D-CT and 3D-CT). Measurements were taken by three observers and repeated 2 weeks later by one of these observers. Intra- and inter-observer agreement was analysed using the intra-class correlation coefficient. For all hips, the mean AA (+/-SD) measured by 2D-CT versus 3D-CT was statistically significantly different (15.76 +/- 5.23 degrees versus 16.76 +/- 4.43 degrees , respectively). The mean (+/-SD) AA by 3D-CT in unaffected and affected hips was also statistically significantly different (13.92 +/- 3.95 degrees versus 18.44 +/- 3.82 degrees , respectively). A significant positive correlation between age at presentation and AA was found in affected, but not unaffected, hips. The 3D-CT showed better intra- and inter-observer agreement than 2D-CT for assessing AA hence is a more reliable measurement of AA. An increased AA is one component of anatomical abnormalities in developmental dysplasia of the hip and the abnormality appears to worsen with age.

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Section: Discussionmentioning

confidence: 72%